Erkki-Sven Tüür (born 16 October 1959) is an Estonian composer. Tüür (Estonian pronunciation: [tyːr]) was born in Kärdla on the Estonian island of Hiiumaa. He studied flute and percussion at the Tallinn Music School from 1976 to 1980 and composition with Jaan Rääts at the Tallinn Academy of Music and privately with Lepo Sumera from 1980 to 1984. From 1979 to 1984 he headed the rock group In Spe, which quickly became one of the most popular in Estonia.